Returning the result of a JPA native query as a simple Map or POJO

I’ve spent quite some time on StackOverflow to answer one simple question: Can I make a JPA NativeQuery return the results as a Map or as a simple POJO? The common consensus looks like it’s not possible. This is unfortunate, but sometimes when people say something cannot be done, I get fired up. And I’ve found a solution, even though it involves a little Hibernate-Vendor-lock-in and a detour.